Iron(II) indicates that the cation is Fe2+. The (II) indicates the oxidation number of iron in this case it has lost 2 electrons. ( OILRIG -oxidation is loss (of electrons), reduction is gain).
A common name for a cation is a positively charged ion.
Li+ cation
Na+ is called a sodium ion or sodium cation.
The cation Si4+.
The cation is always written first in a chemical name. Cations are positively charged ions, while anions are negatively charged ions. The convention is to write the cation first, followed by the anion.
The roman numeral II in the name Iron II indicates that the cation has a +2 charge. This means that the iron ion has lost two electrons, resulting in a positive charge.
The presence of "iron" in a compound indicates that the cation in the compound is likely iron (Fe) in one of its various oxidation states. The specific oxidation state of iron can be determined by the compound's name or formula, such as Fe2+ (ferrous) or Fe3+ (ferric).
The symbol of the cation of FeCl2 is Fe2+. A cation is a positively charged ion and to find the formula of any compound you must balance the cations with the anions.
Roman numerals are used to represent the charge of the cation in an ionic compound. The Roman numeral is placed in parentheses after the name of the cation to indicate its charge. For example, in Fe(NO3)2, the Fe cation has a +2 charge, so it is written as iron(II).
The total positive charge of the cation, which is the iron ion in this case.
Ionic compounds are named by using the name of the cation followed by the name of the anion. The cation retains its elemental name, while the anion's name is modified by changing the ending to "-ide" for monatomic anions. Roman numerals may be used in parentheses to indicate the charge of the cation if it forms more than one type of ion.
The cation is Na+.
Fe^(2+) its name is the iron cation in oxidation state '2' . When combined, with say a sulphate anion it would be named as 'Ferrous sulphate'. NB Ferric sulphate is iron cation in oxidation state '3'. ( Fe2(SO4)3 ). Note the difference in spelling for different oxidation states.
A common name for a cation is a positively charged ion.
The name of a cation in an atom is electron. Cation refers to an ion of negative charge. Since electron is also of the same charge, the cation is electron.
It is the iron(II) cation. The Fe atom loses two electrons to become doubly positively charged Fe2+ cation. Some of the compounds it might form are FeSO4 and FeCl2.
When a cation has more than one possible ionic charge you use either just the number (i.e. 2+) if it is in ion form or a roman numeral (II) in a name.